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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation 1N5401G

Name: 1N5401G
Brand: Taiwan Semiconductor Corporation
SKU: 1N5401G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5401G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: 1N5401G.pdf

Description:: DIODE GEN PURP 100V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:8,173

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Product details

Overview

1N5401G from Taiwan Semiconductor is a glass-passivated silicon standard rectifier diode rated for 3 A average forward current and 100 V repetitive peak reverse voltage (V_RRM), with 125 A surge capability and 1.1 V forward voltage at 3 A. It is used in DC-DC converters, switching-mode inverters, and general-purpose AC/DC front-end rectification where reliability and thermal robustness are required.

For engineers reviewing the 1N5401G datasheet, 1N5401G pinout, 1N5401G application, or 1N5401G equivalent, key selection criteria include verified V_RRM = 100 V, I_F = 3 A, V_F ≤ 1.1 V @ 3 A, R_θJA = 45 °C/W, and DO-201AD package compatibility with high-surge industrial power supplies.

Technical Context

The 1N5401G is a single-die, axial-leaded, standard recovery rectifier with glass-passivated junction for moisture and mechanical protection. Its 150 °C maximum junction temperature and 125 A non-repetitive surge rating support operation under transient overload conditions typical in offline switchers.

Thermally, it features R_θJC = 15 °C/W and R_θJA = 45 °C/W in DO-201AD package, enabling reliable conduction at full 3 A load without forced cooling in ambient up to 75 °C. Reverse leakage remains ≤5 µA at 25 °C and ≤100 µA at 125 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum allowable repetitive reverse voltage before breakdown; defines safe operating range in 100 V-rated AC line or DC bus applications.
I_F	3 A - Continuous average forward current rating; supports sustained rectification in medium-power SMPS and battery chargers.
I_FSM	125 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault currents in unregulated input stages.
V_F	≤1.1 V @ 3 A, 25 °C - Forward voltage drop determines conduction loss (3.3 W max at full load); impacts thermal design and efficiency.
T_J max	150 °C - Maximum junction temperature; enables operation in sealed enclosures or high-ambient industrial environments.
R_θJA	45 °C/W - Junction-to-ambient thermal resistance in standard PCB mount; sets minimum copper area and airflow requirements.
C_J	25 pF @ 1 MHz, 4 V - Junction capacitance affects high-frequency switching noise and EMI filtering design in flyback snubbers.

Pinout & Package

Package: DO-201AD - Axial-leaded, molded plastic case with cathode band marking; UL 94V-0 rated compound; pure tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connected to AC source or transformer secondary; must handle full 3 A RMS and 125 A surge.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to output capacitor or load; polarity marking prevents reverse installation in PCB assembly.

Key Features

Feature	Design Value
Glass-passivated junction	Enhances humidity resistance and long-term reliability in automotive and industrial environments per AEC-Q101 qualification path.
High surge current capability (125 A)	Supports cold-start inrush and short-circuit transients without failure in offline power supplies.
Low forward voltage (≤1.1 V)	Reduces conduction loss by ~15% vs. legacy 1N54xx variants, improving thermal margin at 3 A continuous load.
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained industrial and consumer designs.
DO-201AD mechanical robustness	Withstands 50 g mechanical shock and meets JESD201 Class 2 whisker resistance for lead integrity over time.

Applications

AC/DC Front-End Rectification	DC-DC Converter Input Stage
Use Scenario: Full-wave bridge rectification of 85–265 VAC mains input in open-frame power supplies. IC Role / Device Role / Timing Role: Standard rectifier diode providing unidirectional current flow and reverse voltage blocking. Use Value: 100 V V_RRM provides 2× safety margin over 50 V peak rectified voltage; 125 A I_FSM handles cold-start surges.	Use Scenario: Input rectification in isolated flyback or forward converters fed from 24–48 VDC sources. IC Role / Device Role / Timing Role: Unidirectional current path converting pulsating DC to smoothed DC prior to primary-side switching. Use Value: 3 A I_F rating matches typical 25–50 W converter output; low V_F minimizes pre-regulator losses.
Switching Inverter Output Stage	General-Purpose Industrial Power Supply
Use Scenario: Freewheeling or output rectification in motor drive inverters with 100 V DC bus. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback during MOSFET turn-off. Use Value: 150 °C T_J max allows operation near heatsink surfaces; 45 °C/W R_θJA enables passive cooling in compact enclosures.	Use Scenario: Bulk rectification in DIN-rail mounted PLC power modules or sensor interface supplies. IC Role / Device Role / Timing Role: Main AC input rectifier delivering stable DC bus for downstream regulators and logic. Use Value: Glass passivation ensures >10-year field life in humid factory environments; DO-201AD allows automated axial insertion.

AC/DC Front-End Rectification

DC-DC Converter Input Stage

Use Scenario: Full-wave bridge rectification of 85–265 VAC mains input in open-frame power supplies.

IC Role / Device Role / Timing Role: Standard rectifier diode providing unidirectional current flow and reverse voltage blocking.

Use Value: 100 V V_RRM provides 2× safety margin over 50 V peak rectified voltage; 125 A I_FSM handles cold-start surges.

Use Scenario: Input rectification in isolated flyback or forward converters fed from 24–48 VDC sources.

IC Role / Device Role / Timing Role: Unidirectional current path converting pulsating DC to smoothed DC prior to primary-side switching.

Use Value: 3 A I_F rating matches typical 25–50 W converter output; low V_F minimizes pre-regulator losses.

Switching Inverter Output Stage

General-Purpose Industrial Power Supply

Use Scenario: Freewheeling or output rectification in motor drive inverters with 100 V DC bus.

IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback during MOSFET turn-off.

Use Value: 150 °C T_J max allows operation near heatsink surfaces; 45 °C/W R_θJA enables passive cooling in compact enclosures.

Use Scenario: Bulk rectification in DIN-rail mounted PLC power modules or sensor interface supplies.

IC Role / Device Role / Timing Role: Main AC input rectifier delivering stable DC bus for downstream regulators and logic.

Use Value: Glass passivation ensures >10-year field life in humid factory environments; DO-201AD allows automated axial insertion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar standard rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S	Fast recovery (t_rr ≈ 50 ns), 600 V V_RRM, TO-220AC package, higher cost	Used where reduced switching loss or higher voltage margin is needed; not drop-in due to package and speed difference	Select when designing for <100 kHz switching or >200 V bus; avoid if replacing 1N5401G in legacy 50/60 Hz rectifiers.
1N5401RLG	Identical electrical specs, same DO-201AD package, ON Semiconductor branding, RoHS-compliant	No functional or mechanical difference; qualified for same industrial and commercial applications	Valid second-source option with identical footprint, thermal behavior, and stress ratings; suitable for BOM diversification.

Compared with STTH3L06S and 1N5401RLG, the 1N5401G offers optimal cost-performance balance for 50/60 Hz and low-frequency SMPS rectification, while maintaining proven reliability in DO-201AD form factor without requiring layout changes.

Availability

1N5401G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose industrial power supplies requiring stable component supply, long-lifecycle availability, and AEC-Q101-qualified variants.

Supply support for 1N5401G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, rectifiers, TVS, and LED drivers.

The 1N5400G–1N5408G series was designed specifically for cost-sensitive, high-reliability AC/DC and DC/DC power conversion applications demanding robust surge handling and long-term stability in harsh environments.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the 1N5401G?

The 1N5401G has a V_RRM rating of 100 V, meaning it can safely block up to 100 V of repetitive reverse voltage without breakdown. This value is confirmed in the Absolute Maximum Ratings table on page 1 of the Taiwan Semiconductor K2105 datasheet and is specific to the 1N5401G variant-not shared across the full 1N5400G–1N5408G family.

Is the 1N5401G suitable for automotive applications?

The 1N5401G itself is not AEC-Q101 qualified; however, the 1N5401GH variant (with "H" suffix) is explicitly qualified per AEC-Q101. The base 1N5401G is intended for industrial and commercial use. For automotive-grade deployment, engineers must specify 1N5401GH and verify qualification documentation from Taiwan Semiconductor before design-in.

What is the forward voltage (V_F) of the 1N5401G at rated current?

The 1N5401G exhibits a maximum forward voltage of 1.1 V at 3 A forward current and 25 °C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (0.3 ms pulse width) and represents worst-case conduction loss for thermal modeling of the 1N5401G in power supply designs.

Does the 1N5401G have a fast recovery characteristic?

No, the 1N5401G is a standard recovery rectifier with no specified reverse recovery time (t_rr). It is not optimized for high-frequency switching (>20 kHz). For fast recovery applications, alternatives like STTH3L06S or MUR460 should be considered-neither of which are functionally interchangeable with the 1N5401G without circuit re-evaluation.

What package type does the 1N5401G use, and how is polarity indicated?

The 1N5401G uses the DO-201AD axial-leaded package with a molded plastic body. Polarity is indicated by a visible cathode band on the banded end of the device body. This marking aligns with JEDEC standards and ensures correct orientation during manual or automated PCB assembly of the 1N5401G.

1N5401G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 3 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 5 µA @ 100 V

Capacitance @ Vr, F:: 25pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

Operating Temperature - Junction:: -55°C ~ 150°C

1N5401G FAQ

1.How can I place an order for 1N5401G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5401G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 1N5401G reliable?

The price and inventory of 1N5401G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5401G is usually 5 days.

3.What payment methods are accepted for 1N5401G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5401G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5401G?

1N5401G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5401G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 1N5401G?

For technical support, including 1N5401G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5401G requirements.

6.How does Aetrix verify that 1N5401G is sourced from the original manufacturer or authorized distributors?

All 1N5401G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N5401G meets industry standards.

7.What is the process for return or replacement of 1N5401G?

All 1N5401G units undergo pre-shipment inspection (PSI). If there is an issue with 1N5401G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 1N5401G part is unused and in its original packaging.

Return procedure for 1N5401G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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